CVE-2024-47187Network attack vector

Denial of service via predictable dataset hashes

Published Oct 16, 2024 · Updated Oct 16, 2024

Denial of service in Open Information Security Foundation Suricata before 7.0.7 allows remote attackers to degrade dataset processing. Dataset hash functions use fixed DJB2-style hashing instead of the initialized thash seed, permitting chosen dataset or traffic-derived values to create predictable collision chains. Exploitation requires untrusted dataset content or dataset rules that track attacker-controlled traffic, causing excessive load time or sustained runtime slowdown.

CVSS severity7.5
High
EPSS probability0.32%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in Open Information Security Foundation Suricata before 7.0.7 allows remote attackers to degrade dataset processing. Dataset hash functions use fixed DJB2-style hashing instead of the initialized thash seed, permitting chosen dataset or traffic-derived values to create predictable collision chains. Exploitation requires untrusted dataset content or dataset rules that track attacker-controlled traffic, causing excessive load time or sustained runtime slowdown.

The record

CVE
CVE-2024-47187
Published
Oct 16, 2024
Updated
Oct 16, 2024
Vendor
Open Information Security Foundation
Product
Suricata
Classifications
CWE-330, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 16, 2024CVE publishedPublication date reported by the CVE source.
  2. Oct 16, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 7.0.7

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Open Information Security Foundation · Suricataversion=< 7.0.7

Published CVSS scores

7.5GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-330Use of Insufficiently Random Values
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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